/Engine/Source/Editor/UnrealEd/Public/FileHelpers.h
Check out the specified packages from source control and report any errors while checking out
the result of the check out operation
static [ECommandResult::Type](API\Developer\SourceControl\ECommandResult__Type) CheckoutPackages ( const [TArray](API\Runtime\Core\Containers\TArray)< [FString](API\Runtime\Core\Containers\FString) > & PkgsToCheckOut, [TArray](API\Runtime\Core\Containers\TArray)< [FString](API\Runtime\Core\Containers\FString) > * OutPackagesCheckedOut, const bool bErrorIfAlreadyCheckedOut )